low-level operations meaning in English

低空飞行

The users section parser does not know the correct low - level operation , and it does not need to know it
Users节解析器并不知道正确的低级操作，它也不需要知道该操作。
It ' s harder to write inscrutable " clever " code , but it makes low - level operations like bit - manipulation more difficult
虽然很难写出难以理解的“聪明”代码，它同时也使得一些低级操作，如位操作变得困难起来。
The fourth parameter specifies the low - level operation add user , delete user , change user ; add group , delete group , change group to be executed
第四个参数指定要执行的低级操作（添加用户、删除用户和更改用户；添加组、删除组和更改组）。
To cope with the low - level operation in mining production , we must analyze its cause conscientiously , and orient the development strategy of the coal enterprises on the basis of promoting the key competitiveness
针对煤炭企业安全生产低水平运营的状况，必须认真分析其根源，基于提升核心竞争力，定位煤炭企业的发展战略。